4mm C-Mount lens : Wide Angle C-Mount Lens for 1.85um pixels such as IMX226

The CIL560 is a 4mm C-mount lens with an adjustable iris from F/2.8 to F/16 for 1/1.7" sensors up to 12MP at 1.85μm pixel pitch. It gives you a 98° field of view across a 9.3mm image circle, so the lens covers a large area without forcing you into a fisheye layout. That makes sense for conveyor inspection, robotic guidance, and workspace monitoring where broad scene coverage matters more than perfectly straight geometry.

Distortion is -5%, which is reasonable for a 4mm lens on this sensor size. You would not pick it for precision metrology first, but it works well when the system needs to see more of the workspace in one frame. Pairing it with a sensor like the IMX226 keeps the full 12MP class available while still using a compact C-mount optic.

The lens uses all-glass optics, and the adjustable iris is the main reason to pick it over a fixed-aperture option. You can stop it down for more depth of field when working distance varies or when parts sit at different heights on a line. You can calculate your depth of field to check where the trade between light and depth makes sense.

The standard C-mount thread is 1"-32 TPI, so the lens fits any C-mount industrial camera without adapters. The minimum working distance is 50mm, which is close enough for bench inspection but still flexible for longer-range monitoring.

Commonlands ships in-stock parts same day from San Diego for orders placed before 12 PM PST. You can contact the optical engineering team for volume pricing or application guidance.